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TENNIS, anyone? How about games and a star-studded concert?

Join musical guests Demi Lovato (below), Colby O’Donis, Menudo and Long Island’s own Push Play, along with tennis stars Andy Roddick, James Blake, Roger Federer and Rafael Nadal, at Arthur Ashe Kids Day today from 9:30 a.m. to 4 p.m. at the USTA Billie Jean King National Tennis Center in Flushing. The event is hosted by MTV’s Susie Castillo and Nickelodeon’s Quddus.

“I am really excited,” giggles Lovato, who’ll perform her single “Get Back” at the show.

“I really want to meet Serena Williams, and Andy Roddick would be pretty cool, too,” she tells The Post, “but I might not be able to stay for long because I have a show that night with the Jonas Brothers.”

Lucky girl.

General admission promenade tickets are $10 and loge tickets are $20 at 866-OPEN-TIX.